AP
Oklahoma quarterback Baker Mayfield escapes the pursuit of Texas Tech defensive lineman Talor Nunez during the first half of an NCAA college football game Saturday, Oct. 22, 2016, in Lubbock, Texas. (Mark Rogers/Lubbock Avalanche-Journal via AP)
Oklahoma QB Baker Mayfield kept his cool most of Saturday night -- that is, until the Texas Tech student section started chants of "F--- you, Baker" at the former Red Raider.
A few plays after the hints emerged, Mayfield taunted a Tech defender who was unable to bring him down out of bounds. He picked up a 15-yard personal foul penalty as a result of the only time Mayfield struggled to find level-headedness all evening.